Go Back   Steve's Digicams Forums > Digicam Help > General Discussion

Thread Tools Search this Thread
Old Apr 23, 2003, 3:04 AM   #1
Join Date: Jul 2002
Posts: 72
Default Memory effect on NiMH batteries

I would like to know whether the memory effect is applicable to NiMH batteries. I have read that NiCD batteries have this problem and was under the impression that NiMH batteries are free from this defect. However, Sony's manual for P31/51/71 speaks about memory effect on NiMH batteries. Will be grateful for expert advice in this regard.
Mathew is offline   Reply With Quote
Sponsored Links
Old Apr 23, 2003, 8:20 AM   #2
Senior Member
NHL's Avatar
Join Date: Jun 2002
Location: 39.18776, -77.311353333333
Posts: 11,331

FYI from before:

AAs are very popular now, powerful, as well as inexpensive... if you want Li-Ion, like the others proprietary batteries then there's always the to be released Samsung CRV3 Li-Ion rechargeable which slots right in-place of two AA's. 8) 8) 8)

How about inexpensive films? (Hint CF flash...) ops:
NHL is offline   Reply With Quote
Old Apr 23, 2003, 6:24 PM   #3
Senior Member
Join Date: Jan 2003
Posts: 134

the newer Nickel-Metal Hydride batteries have no memory effect unlike the older nickel cadmium. they are cheap and last a long time

Memory/Voltage Depression

The issue of "memory" or voltage depression has been a concern for many designers of devices, using nickel-cadmium cells. In some applications where nickel-cadmium cells are routinely partially discharged, a depression in the discharge voltage profile of approximately 150 mV per cell has been reported when the discharge extends from the routinely discharged to rarely discharged zones. While the severity of this problem in nickel-cadmium cells is open to differing interpretations, the source of the effect is generally agreed to be in the structure of the cadmium electrode. With the elimination of cadmium in the nickel-metal hydride cell, memory is no longer a concern.
kschewe is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 5:07 PM.